Double action shower mixing valve



May 5', 1942. E, BABBIN 2,282,152

DOUBLE ACTION SHOWER MIXING VALVE Filed June '7, 1940 2 Sheets -shee -t'l I INVENTOR Edward $466230 I, ATTORNEY May 5,1942; E; ABBIN 2,282,152

DOUBLE ACTION SHOWER MIXING VALVE Filed June '7, 1940 v 2 Sheets-Sheet 2 26 Ida/4121346651 ATTORNEY cf Fig. 1. Fig. 3 is a vertical sectional view taken on the Patented May 5, 1942 UNITED STATES PATENT OFF! DOUBLE ACTION Edward Babbin, New York, N. Y. Application June 7, 1940, SerialNo. 339,234

3 Claims.

This invention relates to new and useful improvements in a double action shower mixing valve.

The invention proposes the construction of a mixing valve as mentioned which is capable of uniformly mixing hot and cold water and com trolling the discharge of the mixed water in a manner so that the temperature is uniform.

Still further the invention contemplates so constructing the mixing valve that in the event the thermostat control thereof breaks or is damaged, the mixing-valve will be automatically closed.

Another object of the invention resides in a specific arrangemeritof valv heads within the mixing valve operating in a certain way to obtain the desired results. 7

Still further the invention proposes an arrangement whereby the quantity of mixed Water discharging from the mixing valve may be controlled in addition to'its temperature.

For further comprehension of the invention,

- body Ill provided with an outlet II and having,

' form. The top of the body is closed with -a and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings. and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a ma material part of this disclosure- Fig. 1 is a plan view of a double action shower mixing valve constructed according to this invention.

Fig; 2 is a sectional view taken on the line 2-2 line 3-3 of Fig. 1.

Fig. 4 is a fragmentary horizontal sectional of the mixing valve.

Fig. 6 is a vertical sectional view of Fig. 5.

Fig. 7 is a perspective view of certain valves used in the mixing valve.

Fig. 8 is a plan view of Fig.- 7. I

Fig. 9 is a vertical sectional view taken on the line 9-9 of Fig. 8.

Fig. 10 is a fragmentary vertical sectional view taken on the line I0l B of Fig. 8. Fig. 11 is a perspective view of another one of the valves and associated parts used in the mixing valve. 1

Fig. 12 is a side elevational view of Fig. 11.

Fig. 12A is a view similar to a portion of Fig. 3, but with certain of the parts in elevation.

Fig. 13 is a fragmentary vertical sectional view of a. mixing valve constructed in accordance with a modification of this invention.

Fig. 14 is anenlarged vertical sectional view of a certain valve head illustrated in Fig. 13.

The double action shower .mixing valve, in accordance with this invention, includes a hollow an internal cylindrical portion l2 extending inwards from one side of the hollow body. This cylindrical portion I2 is provided with a transverse partition I3 having a passage l4 dividing it into connected upper and lower compartments l and I6 respectively. Ahot water inlet l1 connects with the compartment IS. A cold water inlet. l8 connects with the compartment I5.

The body is substantially of cylindrical head member l9. A gasket is interposed between the head member l9 and top of the body I0. A plurality of fastening elements 2| secure these parts together. A pair of diametrically opposite lugs 22 project from the body l0 providing elements by which the body may be gripped and held.

. A cylindrical valve 23 is slidably mounted in the cylindrical portion 12 and controls the water inlet l8 to the upper compartment l5. The cy-, lindrical body of the valve 23 has a peripheral cutout 24 through which the water may pass when this cutout is aligned with the discharge port of the inlet I8. portion '25 through which a valve stem 26 is extended. This valve stem is fixedly held in position by a set screw ,2! which threadedly engages through the web portion 25 and abuts the stem 26 and controls the passage l4 through the partition I 3. This valve 28 is slidably mounted on the stem 26 and normally rests on a flange 29 formed or mounted on' the stem 26. A bushing 30 is coaxially mounted on the stem 26 above the valve 28. A spring 3| is coaxially mounted on the stem 26 and acts between the bushing 30 and the web 25 for normally urging the valve 28 down upon the flange 29.

A valve 32 is arranged below the partition I3 and is controlled by the bottom end of the stem 26 and controls said passage 14 in the partition |3. This valve 32 has a stem 33 projecting from its bottomsicle. The valve 32 and stem 33 is The valve 23 has a web' -"cylindrical portion I2 and acts as .a

the tube 38 Y ,ably passes.

ing 43 formed in a top cap 44 and has its gases or a liquid is sealed into the compass of the formed in the bottom 'end of a screw 58'. j screw is associated with means for controlling drical portion I2 against the thermostat of the device. This'thermostat includes a cylindrical body 39, the bottom end of which extends into I and rests on the top'of the cylindrical portion |2.

tion|2 on diametrically opposite sides is formed "with cutout portions I2 which permits the water to pass around the bottom end of the thermostat body 39 to discharge from the compartment l5 into the body "I. The cylindrical body 39 has its bottom end closed with an annular member 48. A pair of bellows 4| is mounted on this annular member. and extends upward into the cylindrical body 39. A bushing 42 is mounted upon the prises a guide The stem 26 extends upwar through the bellows and engages within an opentop of the bellows.

A tube has one end 45 connected with the cylindrical body 39 and is coiled about the body other end sealed. Suitable expansion tube 45 and cylindrical body 39. The top of the cylindrical body'39 is closed with a cap-46. This cap supports a bushing 41 from which a top ,peg

48 projects.

into 'a receiving opening This The peg 48 engages the operation of the thermostat. The'screw 58 The top of the cylindrical porbottom end of the bellows 40 and comthrough which th stem 26 slidmounted ontthe and force the valve 28 against the seat at the top of the partition l3.

The handle 54 may be turned to'cause the screw to move downward or upward as desired. This will change the position of the thermostat, which in turn will change the position of the valve stem 26. This change indirectly affects the temperature of the discharging water.

If the valve stem 26 is in a lower position for the same temperature of the thermostat the valve 23 wil1 becorrespondingly lower and cold water," will be passing through the valve 23 mixing with the hot water which is passing up through the passage |4,'

In the event that the thermostat is broken or damaged, and thus inoperative, or the hot water supply should fail, the spring 35 will immediately expand and move the valve stem 26 upward. The

valve-32 then engages against its seat on the bottom of the partition 13 closing the passage of hot water through the passage 14. This prevents scalding water'from being discharged by the mixing valve. Upward motion of the stem 26 will also cause the valve 23 to close the passage of cold water.- Thus when the thermostat is damaged, the discharge of water will be automatically cutoff.

In Figs. 13 and 14 a modified form of the invention has been disclosed which distinguishes from the prior-form in the fact that means has been provided for holding the valves 32 and 28 in selected relative positions for controlling the is threadedly engaged'through a boss 5| formed on the top of the head member 49. A cap 52 threadedly engages over the boss 5|. A spring 53 is mounted within the cap 52 coaxially of the stem 5|! of the screw which extends upward out through the cap. The spring 53 functions to prevent the cap 52 from working loose. A handle I 54 is mounted upon the outer end of the screw stem 5|) by which the screw 58 may be turned.

The operation of the device is as follows: With the parts as illustrated in Fig. 3 hot water which enters through the inlet II will pass up through the passage l4 and through the center of the valve 23 and upward into the body ID. If the temperature of this water rises the liquid or material within, the thermostat will expand and force the bellows 4| downward. This moves the valve stem 26 downward. Since the valve 23 is mountedon the stem 26 it moves downward and thus cold water from the inlet I8 may now pass through the groove 24 of the valve 23 and mix with the hot water. stern closer to its seat on the partition I3, thus acting to cut down the supply of hot water. In this Simultaneously, as the valve fashion a regulated mixed water supply will discharge into the body 18 and out from the outlet H. v

- The 'valve 28 is provided for closing the passage l4 through the' partition l3 when the cold water supply is reduced or shut off entirely, since the excessive heat would move the stem 26 downward 26 moves downward the valve 28 will move quantity of water passing through the mixing valve. More specifically, the stem 33 of the valve 32 has an adjustment screw which is threadedly engaged into its bottom end, and which extends upward and forms the bottom of the opening 34 into which the valve stem 26 engages. The screw 55 has a cut 56 in its bottom end into which a screw driver may be engaged for turning the same. screw 55 to hold it in adjusted positions.

It is necessary that the cap 31, the spring 35, and the valve 32be removed before it is possible to adjust the screw 55. A change of the relative positions of the valves 32 and 28 willcontrol A lock nut 51 is mounted on the the initial passage of hot water through the passage M with the valve 23 in its closed position.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the an internal cylindrical portion formed in one end of said body and having a transverse partition having a passage and dividingsaid cylindrical port1on into connected upper and lower compartments, a hot water inlet to one of said compartments, a cold water inlet to the other of said compartments, a cylindrical valve in the upper compartment of said cylindrical portion and movable upwards to closesaid water inlet to said upper compartment and movable downwardsto open said water inlet to said upper compartment, a valve stem having an intermediate por- Y tion securely attached to said cylindrical valve and having its free ends projected upward and downward through said passage, a valve fixedly mounted on the downward extending end of said valve above said partition in a position to seat on the top face of said partition over said passage when said cylindrical valve is in its open position to control the passage of water from said lower to said upper compartment, resilient means operating between the bottom end of said valve stem and adjacent portion of said body urging said valve stem upward to correspondingly move said valves and open one and close the other, an expanded thermostat mounted within said body and engaging the top end of said valve stem urging it downward against the holding action of said resilient means and correspondingly move said valves to open the closed one and, close the open one, whereas if said thermostat breaks and collapses it will free said valve stem to-be urged completely upwards by said resilient means, and a'third valve fixedly mounted on the downwardly extending end of said valve stem below said parti tion in a normally inoperative position, whereby when said thermostat becomes inoperative and frees said valve stem said spring will. urge said valve stem upwards to seat said third valve on valve stem and simultaneously move said cylindrical valve upward to close the water inlet to said upper compartment.

2. In a hot and cold mixing shower valve as described in claim 1 the addition of means for holding said third valve in various adjusted positions on the bottom end of said valve stem so that said third valve may be properly positioned to remain inoperative during normal operation of said valve.

3. In a hot and cold mixing shower valve as described in claim 1 the addition of means for holding said third valve in various adjusted positions on the bottom end of said valve stem so that said thirdvalve may be properly positioned to remain inoperative during normal operation of said valve, said latter-mentioned means, comprising a downward extending cup-shaped projection formed on said third valve and into which the bottom end of said valve stem extends, and a screw threadedly extended through the bottom wall of said cup-shaped projection and having its top end abutting the bottom end of said valve stem to move said third valve relative to said valve stem and partition as said screw is turned.

EDWARD BABBIN. 

